/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/Selections/QuadGridPatch.h
Append the rows of NextPatch to the rows of the current QuadGrid. NextPatch must have the same number of vertex-columns as this Patch. Requires that the last vertex-row of this Patch be the same as the first vertex-row of NextPatch.
true if append succeeded
bool AppendQuadPatchRows ( [FQuadGridPatch](API\Plugins\DynamicMesh\Selections\FQuadGridPatch) && NextPatch, bool bChecked )